public static BufferedImage apply(BufferedImage _image) {

BufferedImage imageOutput = Unitys.copyImage(_image);

int grayscale;

for (int i = 0; i < _image.getWidth(); i++) {

for (int j = 0; j < _image.getHeight(); j++) {

int rgb;

int p = RGB.getRGBW(_image, i, j);

rgb = (int) ((((p >> 16) & 0xFF) * 0.2125) + (((p >> 8) & 0xFF) * 0.7154) + ((p & 0xFF) * 0.0721));

rgb = (rgb << 16) | (rgb << 8) | (rgb);

imageOutput.setRGB(i, j, rgb);

}

}

return imageOutput;

}